如何监听 Visual Studio 代码模型事件？

Question

我正在实现 Visual Studio 插件，我希望在 C# 编辑器中删除类或方法时通知我的服务。是否有任何示例显示如何做到这一点？

Answer 1

您可能正在寻找通过 DTE2 对象公开的代码模型事件。对于功能齐全的同步，您还需要处理 ElementChanged 和 ElementAdded 事件：

public void RegisterCodeModelEvents(DTE2 applicationObject)
{
   events = (Events2)applicationObject.Events; //events Must be a field
   codeModelEvents = events.get_CodeModelEvents(null); 

   codeModelEvents.ElementChanged += CodeModelElementChanged;
   codeModelEvents.ElementAdded += CodeModelElementAdded;
   codeModelEvents.ElementDeleted += CodeModelElementDeleted; // this is it!
}

完成后不要忘记删除处理程序：

private void UnregisterCodeModelEvents()
{
    if (codeModelEvents != null)
    {
        codeModelEvents.ElementAdded -= CodeModelElementAdded;
        codeModelEvents.ElementChanged -= CodeModelElementChanged;
        codeModelEvents.ElementDeleted -= CodeModelElementDeleted;
    }
}